VMware ESXi 6.0 Update 2 – Host Client “Service Unavailable” error

One of the features added is the VMware Host Client – an HTML5 standalone web interface for managing an ESXi host. This has been available as a VMware Labs “Fling” for a while but it’s now part of the default installation. It allows you to manage a standalone ESXi server without needing vCenter or the Windows-only vSphere Client (aka the C# client).

When I tried to access the new client (https://[yourhost-ip-or-name]/ui/) , I was faced with an error: